Tire construction



Seit. 21'; g, 1,600,694 I v R. R. MUNDELL v I TIRE CONSTRUCTION Filed May 21. 1924 2 sheetsh'ee't 1 I ZI QT ,Y 32

E vga-T 543:15.

septu 21 192ei 1.600394 t R. R. MUNDELL' Y TIRE CONSTRUCTION Filed May 21. 1924 2 :met-sheet 2 v Patented Sept. 21, 1926( UNITE TES RALPH ROGERS MUNDELL, OF CHICAGO, ILLINOIS.

ArsD

TIRE CONSTRUCTION.

Application led May 21, 1924. Serial No. `714,784.

This invention relates to aninner tube for use in an improved metal casing having a solid rubber tread and slidable with respect to a hollow rim ymemberattached to a wheel felly and having the inner tube attached thereto, thereby producing a tirehaving the advantages of both a solidV tire and a pneumatic tire. f p

It is anobject of this invention to provide av wheel having a metal tire casing carrying a solid rubber tread and cushioned y an improved canvas covered inner tube 'connected to a hollow rim member having 'a chamber communicating with the air chamber within the metal tire casing.

It is also an object of the invention to provide a wheel having a resilient or flexible tire casing supported upon 4a pneumatic cushion provided with a covering having teeth formed thereon for ycoaction with tooth members, formed within the tire casing, to obviate slippage between the `cushion and said tire casing.

It is an important object 0f this invention to provide a simple and improved tire construction wherein a metal casing carrying a solid rubber tread has sliding engagement with a chambered rim and is cushioned against a covered innerftube constructed so that slippage between the yrim and thel covered inner tube is obviated.

With these and other objects in view which will become more apparent in the following description -and disclosures, this invention `comprisesthe novel mechanism and combinations hereinafter described and more particularly pointed out anddefined in the appended claims.

In the accompanying drawings, which il,- lustrate apreferred embodiment of this invention, and in which similar reference numerals refer to similar features in the different views f Y Figure '1 is a side elevation of afwheel lequipped with a tire casing and inner tube embodying the principles of this invention. Figure 2 is a plan view of the tire partly broken away showing (anl emergency -rim in section. l'

y Figure Bis an enlarged transverse section taken on line 3 3 of Figure l. l

' Figure 4 is a reduced section; on line 4-4 of-Figure 3.- Y Y y' Figure 5 is a fragmentarydetail sectiontaken on line V5 5 of Figure r2.

Figure 6 Sa fragmentary section' taken v through a modified tire illustrating the interfitting arrangement between the' tire casing and the inner tube covering.

Figure 7 is a fragmentary detail section taken on line 7-7 of Figure 6.

As shown on the drawings: The reference numeral 1 indicatesV a vehicle wheel having a felly 2 to which is secured by mea-ns of boltsV Spor other suitable means, a flanged hollow Vmetal rim 4 having l a continuous air chamber 5 (Figure 3) The outer peripheral wall 6 of the hollow rim 4 is offset at 7 to afford ay groove or recess 8. The outer peripheral rim wall 6 is provided -with `a plurality of Ventilating pash sages or apertures 9.'

Engaged around the hollow rim4 is a rubber inner tube 10 adapted to be inflated by means of a valve 11. The inner tube 10 is enclosed in a canvas envelope or covering 12; the margins of which are'rbent or rolled around wire rings 13 to form beads 14 which seat in the groove 8. A metal retaining ring 15 is also seated in the groove 8 against the beads 14 andl is secured to the hollow rim 4 by screws 16 or other suitable means.

Ventilating apertures 17 are provided in the retaining ring 15 and register: with the apertures 9 in the wall 6 of the hollow rim 4.

The inner tube 10 and its covering 12 are enclosed by a slidable or shiftable steel tire casing comprising side walls 18 yand 19rintegrally connected by a thread ring 20. A canvas liner 34 is secured on the inner peripheralJ surface of the tire casing tread ring 20. The tire casing wall v18 iswider than the wall 19 and has ring flanges 21 integrally formed on the innerjside thereof to form a pocket lwithin whichV a ,wooden ring 22 is seated lflush with theinner edges of the flanges 21; A packing ringf23 of wood or bearing metal is positioned between*V the wooden ring 22 and one side of thehollow metal rim 4. A hard packing ring 24 is packing ring 23 and is heldin place by ya The second tire ,ca-'sing wall 19 is Anotas engaged around the'inner periphery of the y wide as the casing wall 18 and is provided with a ring'groove at 2,6,to 'receive'seated therein a flange`27 integrally formed onfa steel retaining ring 28.l Bolts or screws 28a are used to holdthe retaining ring 28 securedto the casing wall 19.. Ring flanges 29 are integrally formed .on the inner side of the retaining ring 28 and form a pocket or groove within which a wooden ring BO is seated. A packing ring 3l of wood oi' bearing metal is positioned between the wooden ring 30y and one side of the hollow niet-al rim 4L. A hard packing ringl 24is also engaged around thepacling ring 8l and is held in place by a metal retaining ring secured to one of the nanges 29 of the retaining ring 28. The retaining ring 2S Vthus serves to hold the metal casing in vposition on the hollow wheel rim 4l and en- 4closes the pneumatic innertube l0 andthe tube covering l2. y y

` A liardrubber tread 32 is secured. to the tire tread ring 2O so .that theimproved tire construction embraces a hard Lrubber tread and va pneumatic `inner-'tube cushioning arrangement. d l Y l y AFigure 2 ispartly vbrokenfaway and shows v afZ-vcross-,sectioned emergency rim 33 which inaybe insertedvr in place asV illustrated when the covered inner tubehas been injured, so that movement between the metal casing and the hollow rim is prevented by the rim 33 thereby taking the load oil of the' covered innertube and ypermitting the wheelto be used without the A`pneumatic .cushioning effect. K' n n 'N F igures' 6, and ,7 illustrate a vmodification wherei-nfthe inner peripheral surfaceof the tire tread ringr 20 has secured thereto a V"caiivas liner 35 on which a plurality of spaced hard rubber ribs or teeth 86 ,are formedv .or secured. Hard rubber ribs or teeth 37'are also formed on the periphery of the inner tube canvas lcovering y38. The teeth 37 interfit` with the teeth 36 so that creeping between theinner tube and the metal casing is obviated. f

The improved metalcasing may be readily engaged in position co-acting with the hollow yrim ,4 when the retaining ring 28 is yrenirrved and vwhen the covered innertube is notrinfiated. After the tire has been slippedV into place the retaining rinfg 15 is lfirst secured in place by the-screws i6 holding the beads'le of the inner tube covering seated in the rim' groove 8 (Figure 3). -Tlie casing retainingring V28 is then secured to the casing wall 19 and the inner tube is then inflated so that the canvas covering 12 will .press againstlthe canvas liner 34 .of the casi-n'g'suiiciently toreduce any creeping effect ofthe covered inner tube with respect to the Aliner 34. The registering-passages 9 and/17 connect the rim chambeii'with Vthevinterior of the metal casing andact as ventilators to let'theaii' and moisture in the steel casing-pass into and outof the -hol- Alov/frim if-when the wheel is'v rotating and the tire moves 'with-respectfto the hollow .lln` L if s Tlie'itiie; vaybe easily removed ',frointlie 'enclosing saidrim 4 by letting the air out of the inner tube 10 and then'V removing iirst the outer retaining ring 28 and then the inner retaining ring l5v which hold the covered inner tube in'p'osition ontlie hollow rim Ll.

l am aware that many details in the construction Hmay be varied through a wide range without departing from the principles of this invention, and I therefore do not wish to ,limit the patent granted otherwise t-han necessitated by the prioinart.

I claim as my invention z# n 1. A tire constructioncomprising a hollow rim adapted Ito be secured to a wheel felly, a pneumatic inner tube engaged around the peripheryof said hollow rim, a beaded covering vfor said` inner tube, a 4r j-j taining ring 1adapted to .hold .the Ubeaded Covering secured to thehollow rim, a metal. casing enclosing the inner' ztube and the covering, and having sliding engagement with the hollow rim, -paclingpbetween 'the metal casing and said hollow rim, alining in said-casing against which the linner tube covering is jadapted toiengage, v.and a solid rulcber tread secured peripherally on the metal casino. (n

2. Thelcombinationi witha vhollow r`metal rim member adapted .to vbe secured lto a wheel felly,l of a covered yinner -tube, a retaining' ring for holding the covered'. inner tube secured to the hollow rim, `and a' metal casing enel'o'sing the covered-"inner :tu-be'A and havingl sliding engagement with the hollow rim. Y I y l V3. Thecombination with a wheel and-the Vfelly thereof, of a'hollow vrim' member se# curedthereto and having ventilatingpen# ings therein, a pneumaticinner tube, a canvas covering therefor, beads kformed on said covering, a retaini-ngrifng secured to the rim and kengaging said beads to 'holdthe innertubea-nd the covering in place, a metal casing havingsliding engagement with the hollow riin,y a retaining-:ring removably securedv tothe casing .and packing? carriedV by the casing and the casingr'etziiningring.

4. A tire construction comprising a hollow rim' having' Ventilating openings there# inf a metal casing slidablyengaged with the hollow rim, an yinner tube in sai-d casing7 and a retaining ring secured to said hollow iio rim for holding the inner tube engaged to f theliollow rim, said retaining-ring having openings therein registering w'itlitheopenings ini-said hollow rim.

5. Atire construction' comprising -a hollow riin formed with a peripheralgroove, :an inner tube,.a,c overingtlierefor, ;beads formed on V said covering, wires Vin said beads, p aV retaining ring secured?d to ,fs-aid hollow rim to hold the beads seatediii-the periph-eral groove ofsaid; hollow rinnacasing neifftubetand the covering, packing iineinbers between the Vcasing Tandr said hollowrim, a lining in said casing adapted to beoontacted by the inner tube covering, and a solid'rubber Atread secured around Jthe periphery of said easing.

6. A tire construction comprising a hollow rim, a covered inner tube, means for holding the covered inner tube secured t0 the hollow rim, a metal easing enclosing the Covered inner tube and having sliding engagement with the hollow rim, paekings between the casing and said hollow rim, and interfitting members formed on said covered inner tube and in said Casing to obviate creeping of the covered inner tube with respect to the easing.

7. A tire construction comprising a hollow rim having a groove therein, an inner tube, a covering therefor, beads formed on the inner periphery of the covering and seated in said rirn groove, Wires in said beads, a retaining ring secured in the rim groove against said beads, a met-al casing enclosing the inner tube and said covering and having sliding engagement with the hollow rim, a retaining member secured to the easing, packing separating the hollow rim from said easing and from said retaining member, a solid rubber tread on the exterior of the casing, and interfitting means in said easing and on said inner tube cover to hold the tube against slippage with respect to the easing. In testimony whereof I have hereunt subscribed my name.

RALPH RoGRRs MUNDRLL. 

